<?php
class MW_Simplenews_Block_Newsblock extends Mage_Core_Block_Template
{
	public function __construct(){
		parent::__construct();
		$collection = $this->getCategoryCollection();
		$this->setCollection($collection->getData());
	}

	public function _prepareLayout()
    {
		return parent::_prepareLayout();
    }

    public function getCategoryCollection(){
		 $collection = Mage::getModel('simplenews/category')->getCollection();
		 return $collection;
    }
}